Coughing during pregnancy does not hurt your baby. Your baby is well protected inside the uterus by amniotic fluid, which acts as a shock absorber against the physical force of a cough. Even a prolonged, intense coughing fit won’t reach or jostle your baby in any harmful way. That said, the underlying cause of a cough, particularly an infection with high fever, deserves attention.
Why Your Baby Is Protected
The uterus is a thick layer of muscle, and inside it your baby floats in amniotic fluid. This fluid cushions against all kinds of everyday physical forces: sneezing, laughing, coughing, even minor bumps. A cough generates pressure in your chest and abdomen, but that pressure doesn’t translate into direct impact on your baby. Think of it like tapping the outside of a water balloon. The liquid inside absorbs the movement.
Your abdominal muscles do tighten when you cough, and you may feel your belly get momentarily hard. This is not a contraction in the way that labor contractions work. It’s a brief, reflexive tensing that relaxes as soon as the cough ends and poses no risk to the pregnancy.
The Infection Matters More Than the Cough
While the physical act of coughing is harmless to your baby, an upper respiratory tract infection can have effects worth knowing about. A literature review published in Current Infectious Disease Reports found that upper respiratory infections during pregnancy were positively correlated with preterm delivery and cesarean delivery. However, the same research found no difference in rates of premature rupture of membranes, perinatal mortality, or low Apgar scores (a measure of newborn health at birth) between women who had respiratory infections and those who didn’t.
The concern isn’t the coughing itself but the body’s immune response to infection. Pregnancy shifts your immune system to protect the developing baby, which can make you more vulnerable to severe outcomes from respiratory viruses. Some infections don’t reach the baby directly but trigger widespread immune activation in the mother, which can indirectly affect pregnancy. A fever of 100.4°F (38°C) or higher is one clear signal to contact your healthcare provider, since sustained high temperatures in early pregnancy have been linked to developmental concerns.
Safe Ways to Manage a Cough
Most coughs during pregnancy are caused by colds or mild respiratory infections and resolve on their own. In the meantime, several approaches can help without posing any risk to your baby:
- Honey in warm tea is a simple, effective cough soother and is safe throughout pregnancy.
- Steam inhalation from a hot shower, vaporizer, or humidifier loosens congestion and calms irritated airways.
- Staying hydrated with warm liquids keeps mucus thin and easier to clear.
- Mentholated chest rub (like Vicks VapoRub) or cough drops, mentholated or plain, can provide temporary relief.
- Rest gives your immune system the best chance to fight off the infection quickly.
If home remedies aren’t enough, the cough suppressant dextromethorphan (found in Robitussin) and the expectorant guaifenesin (plain Mucinex) are generally considered safe during pregnancy. Look for versions without alcohol and without multiple active ingredients. Avoid combination cold medicines unless you’ve confirmed each ingredient is pregnancy-safe.
Protecting Yourself From the Discomfort
While your baby isn’t at risk from coughing, your own body can take a beating. Pregnancy already stretches your abdominal muscles and shifts your ribcage, and repeated forceful coughing on top of that can lead to sore ribs, pulled muscles, or even stress fractures in the ribs. The Royal Berkshire Hospital notes that sudden, sharp rib pain after a long bout of coughing may indicate a cough-induced rib fracture, which, while painful, heals on its own with time.
A technique called splinting can help. Hold a pillow firmly against your belly or chest when you feel a cough coming on. The external support reduces the strain on your abdominal and rib muscles. Sitting slightly upright rather than lying flat also makes coughing less forceful and helps you breathe more easily, especially in the third trimester when your uterus is pressing up against your diaphragm.
Intense coughing can also put temporary pressure on your pelvic floor, which is already under extra load during pregnancy. This sometimes causes a small urine leak, which is common and not a sign of anything wrong. Pelvic floor exercises (Kegels) can help reduce this if it becomes a recurring issue.
Whooping Cough and the Tdap Vaccine
One type of cough that does pose a real danger isn’t yours. It’s whooping cough (pertussis) in your newborn. Babies under two months old are too young to be vaccinated and are extremely vulnerable to this infection. The CDC recommends getting the Tdap vaccine during weeks 27 through 36 of each pregnancy, preferably early in that window. Getting vaccinated during this period lowers the risk of whooping cough in babies younger than two months by 78%, because your body passes protective antibodies to the baby before birth.
Signs That Need Medical Attention
Most pregnancy coughs are nothing more than a nuisance, but certain symptoms warrant a call to your provider. A fever of 100.4°F or higher, difficulty breathing (feeling like you can’t get enough air, tightness in your chest or throat, or needing to prop yourself up with pillows to sleep), coughing up colored or bloody mucus, or a cough lasting more than two weeks all justify a check-in. These can signal infections like pneumonia or flu that benefit from early treatment.